Richard Shaefer, CEO of Golden Boy Promotions; Steve Sisolak, Clark County commissioner; Jim Murren, Chairmn and CEO of MGM Resorts International; boxer Floyd Mayweather Jr.; Dan Beckerman, president and CEO of AEG; Bill Walton, sportscaster and former NBA player; Luke Robitaille, president, business operations for the Los Angeles Kings; and Dana White, president of UFC, break ground on a new indoor arena on Thursday, May 1, 2014, in Las Vegas. The 20,000-seat sports and entertainment venue will be located near New York-New York and Monte Carlo and adjacent to I-15.